Ventilated bath-box for chemical and photographic purposes



J. G. MAGURDY.

Ventilated Bath Box' for Chemical and Photographic Purposes.

No. 234,879. Patented Nov. 30,1880.

C INVBNTORo g 9jybbwlr/ BY g ATTORNEYS.

N, PETERS, PHOTO-LITHOGRAPHER, WASHINGTON, D C.

UNITED STATES JAMES C. MAOURDY, OF BOONVILLE, MISSOURI.

PATENT OFFICE.

VENTILATED BATH-BOX FOR CHEMICAL AND PHOTOGRAPHIC PURPOSES.

SPECIFICATION forming part-0f Letters Patent No. 234,879, dated November30, 1880.

Application filed March 25, 1880.

To all whom it may concern:

Be it known that I, JAMES C. MAGURDY, of Boonville, in the county ofCooper and State of Missouri, haveinvented a new and ImprovedVentilating Bath-Box for Chemical and P110- tographic Purposes, of whichthe following is a specification.

The object of this invention is to provide a bath -box for the use ofphotographers and others whereby the escape of poisonous gases, to theinjury of the operator, shall be prevented.

The invention consists of a box for holding the bath tub or tray, andhaving a water-reservoir beneath said tub or tray, and provided alsowith a glass hinged lid in its front that may be raised to any desiredangle; and it consists, further, of wings attached to the ends of saidlid, so that when it is raised the wings close the spaces between itsends and the ends of thebox; and it consists, further, of a platform forsupporting a lamp in the top of said box, by means of which lamp anupward draft is maintained throughout the box.

Figure l is a perspective view of the box opened. Fig. 2 is a verticalsectional front elevation of the same on line as as, Fig. 3. Fig. 3 is avertical sectional side elevation of the same on line y y, Fig. 2.

Similar letters of reference indicate corre spending parts.

In the drawings, A represents the box, that may be of any desired shape,provided with a tightly-fitting peaked cover or roof, B, from the apexof which a flue, 0, projects upward, to conduct away all the fumesgenerated in said box.

Drepresents the water-reservoir, from which the waste pipe and overflowpipe to I), respectively, project through the front of said box and overa drip-pan, E, that is supported on the front of said box, and isdesigned to conduct away the liquid flowing from said reservoir.

F represents the tray designed to hold the solution that is used forclearing or freeing photographic negatives or ambrotypes, or for otherpurposes, said tray F being supported on bars or rods m, that are fixedhorizontally across the interior of said box A, over or within thewater-reservoir D.

(No model.)

Gr represents the hinged lid, made of a framed plate of glass, in orderthat the operator may observe the progress of the process or work withinthe box without opening said lid. To either end of this lid are attachedthe fan-shaped win gs H, that extend rearward and lie flat against theends of the box A, as shown, being guided or restrained in place by thestrips I, that are fastened over them upon the ends of the said box.These wings H are designed to close the openings between the ends of thelid Gr and the box A whenever said lid Gr is opened, and thereby toprevent the escape laterally of the noxious fumes from the bath.

Fixed upon one of these guiding-strips I is a spring, K, provided on itslower end with an inward-projecting pin, d, which pin (1 is forced, bythe action of the said spring K, to enter through an opening in saidguiding-strip I, and into holes ff, made in a wing, H, in order to holdthe lid G in any desired position. By pulling the lower end of thisspring K outward the pin (1 is disengaged from the wing H, and the lidGr may then be closedor opened to any extent.

L represents an opening made in the front of the peaked roof B, anddesigned to be tightly closed by the door M, that is felted or packedfor the purpose of forming a tightjoint. In this door M a glass, N, isinserted, through which glass the operator may observe the condition ofthe lamp that is placed within the said top B of the box.

0 represents a platform having raised ends and edges, for supporting alamp, P, the raised endsand edges of said platform serving to preventthe accidental dripping or overflow of oil from the lamp P into the bathbelow. When this lamp P is burning it will create a constant upwarddraft through the line C, and thereby direct all fumes from the saidbath away from the operator.

This device is especially designed for operating with baths of cyanideof potassium and other liquid solutions or gases that give off fumes orvapors that are injurious to the operator; and the application of thedevice is not confined to photography, but may be extended to a greatvariety of other chemical processes and manipulations.

The water in the reservoir beneath the bathtray is designed to absorbthe heavy gases that may fall from said tray. The waste-pipe is fordrawing off the water at any time, in order that it may be renewed. Theoverflowpipe prevents the water from rising too high within the box, andalso serves to supply air for the lamp. The drip-pan is designed toconduct away the water drawn or overflowing from the reservoir, and alsoto catch any drops I box 5 and it more light be desired within the box,glass may be inserted in the back or sides thereof.

Having thus fully described my invention, 1 claim as new and desire tosecure by Letters Patentl. A ventilating photographic and chemicalbath-box constructed substantially as herein shown and described,consisting of the box A, fine 0, water-reservoir D, provided with wasteand overflow pipes, glass lid G, provided with wings H, and lamp P,supported on platform 0, as set forth.

2. The combination, with the bath-box A, of the hinged glass lid G andwings H H, held in any desired position by the spring K, provided withthe pin d, substantially as and for the purpose described.

JAMES C. MAGURDY.

Witnesses:

' I. G. PINNELL,

D. T. WOOLDEIDGE.

